Urushiol-aluminium chelate polymers were synthesized by reaction of urushiol and aluminium chloride. Polymers with different aluminium content were obtained through different urushiol-AlCl3 molar ratios. IR spectra showed that new peaks appeared at 580-660 cm-1

and peake at 3200-3500 cm-1 greatly weakened

We can conclude new compound was formed after

reaction. The weakness and disappearance of double bond absorption indicated the urush-iol-aluminium chelate converted to polymer during reaction. MS results showed urushiol and AlCl3 formed chelate compound initially. Coatings made from these chelate polymers possess-ing excellent physico-mechanical properties and good heat-stability.